push out side window seals??
The window assemblies have to come out and the frames disassembled. The rubber seals themselves are available from a number of sources. The 'flocked' hinge seal is a different story.
Some pics here (bottom of page):
http://www.70duster440.com/misc.html
And video #7 on this page shows some details on how the assembly comes out - several minutes in:
http://www.70duster440.com/downloads.html